AirLive WN-151ARM - Manual (Page 109)

AirLive WN-151ARM User’s Manual 109
Access Point (AP)
The central hub of a wireless LAN network. Access Points have one or more Ethernet ports that can connect
devices (such as Internet connection) for sharing. Multi-function Access Point can also function as an
Ethernet client, wireless bridge, or repeat signals from other AP. Access Points typically have more wireless
functions comparing to wireless routers.
ACK Timeout
Acknowledgement Timeout Windows. When a packet is sent out from one wireless station to the other, it will
waits for an Acknowledgement frame from the remote station. The station will only wait for a certain amount of
time; this time is called the ACK timeout. If the ACK is NOT received within that timeout period then the packet
will be re-transmitted resulting in reduced throughput. If the ACK setting is too high then throughput will be lost
due to waiting for the ACK Window to timeout on lost packets. If the ACK setting is too low then the ACK
window will have expired and the returning packet will be dropped, greatly lowering throughput. By having the
ability to adjust the ACK setting we can effectively optimize the throughput over long distance links. This is
especially true for 802.11a and 802.11g networks. Setting the correct ACK timeout value needs to consider 3
factors: distance, AP response time, and interference.
Bandwidth Management
Bandwidth Management controls the transmission speed of a port, user, IP address, and application. Router
can use bandwidth control to limit the Internet connection speed of individual IP or Application. It can also
guarantee the speed of certain special application or privileged IP address - a crucial feature of QoS (Quality
of Service) function.
Bootloader
Bootloader is the under layering program that will start at the power-up before the device loads firmware. It is
similar to BIOS on a personal computer. When a firmware crashed, you might be able to recover your device
from bootloader.
Bridge
A product that connects 2 different networks that uses the same protocol. Wireless bridges are commonly
used to link network across remote buildings. For wireless application, there are 2 types of Bridges. WDS
Bridge can be used in Point-to-Point or Point-to-Multipoint topology. Bridge Infrastructure works with AP mode
to form a star topology.